Root XXADLG4 Android 4.1.1 on Galaxy S3 I9300 with CF-Root

The upcoming Jelly Bean firmware XXADLG4 Android 4.1.1 for Galaxy S3 I9300 was leaked yesterday with a video and today, the first download link has been posted online which you can install on your phone. I9300XXADLG4 (JRO03C) is a beta ROM and is completely unbranded. Here is the tutorial to root Galaxy S3 I9300 on XXADLG4 Android 4.1.1.

As you continue reading below, we will guide you through the entire process of how to root XXADLG4 Android 4.1.1 on Galaxy S3 I9300. Please backup your data as a precaution because you never know when something might get wrong. Let’s get on with the tutorial now.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 😉

CF-Root Package Contents:

CF-Root package comes with the following:

SuperSU v0.93

ClockworkMod (CWM) recovery v5.5

CWM Manager v3.60

Make sure you have installed all your USB drivers for the Samsung Galaxy S III to connect it with the computer. Download Samsung Galaxy S3 USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

How to Root Android 4.1.1 XXADLG4 on Galaxy S3 I9300

We have put together a detailed step-by-step instructions guide on how to update Samsung Galaxy S III to Android 4.1.1 XXADLG4. If you are used to installing official updates through ODIN on Samsung Galaxy devices, then this should not be any different for you.

Please read every line carefully and read the entire tutorial first before actually performing it on your Galaxy S3 I9300.

To Remember:

This root method tutorial is only for Samsung Galaxy S3 I9300. Please don’t try this on any other variants of the phone.

Make sure you backup all your data in your phone before proceeding as a precaution. No data will be lost though.

Step 2 –Download ODIN v1.85 (if needed) which will help you to install Android 4.1.1 on Samsung Galaxy S3 I9300.

Step 3 – Switch off your phone. Now go to Download Mode on your phone. How? Press and hold the Volume Down + Home buttons together, and then press the Power button till you see the construction Android robot and a triangle. Press Power again to confirm to enter into Download Mode.

Hi guys,
I hope you will understand my mistakes because I’m quite fresh in android world I just came from iPhone and naively clicked an update (30 MB) that showed available in notification screen of my phone. So now my phone is locked What can I do ? It was on T-Mobile and I live in a country that doesn’t have that provider in its national carrier offer.

Author

Name:Haris NadeemBio: Someone who lives on everything Android -- countless devices, apps and games to play with everyday. Chief Editor at Team Android. He has written 2798 guides and other posts.